DECOMPOSITION ANALYSIS OF CO₂ EMISSIONS BY FAMILY-TYPE WITH CONSIDERING TEMPERATURE SENSITIVITY IN SHIGA PREFECTURE

Abstract

 By applying the LMDI method to the household sector, the characteristics of CO₂ emissions changes by family-type are analyzed. Since energy consumption is greatly affected by temperature, temperature sensitivity is also taken into consideration. In FY2018, the rates of change in energy consumption and CO₂ emission compared to FY2013 were -8.8% and -29.4%, respectively. Among all the family-type households, the decrease in CO₂ emission factor of electricity greatly affected to the CO₂ emissions changes, accounting for more than half. Aged-single-person household contributed to the increase in CO₂ emission, while other family-types households contribute to the decrease. The first reason of the increase was the increase in the number of households. It was clarified that aged-single-person household had a relatively small decrease in efficiency improvement.